Fastly (NYSE: FSLY) CTO Bergman sells 305K shares under 10b5-1 plan

Rhea-AI Filing Summary

Fastly, Inc. Chief Technology Officer Artur Bergman reported open-market sales of Class A common stock executed through his revocable trust. On March 9–10, 2026, the trust sold a total of 305,000 shares in multiple transactions at reported weighted average prices of $20.16, $21.13, $21.73, and $22.79 per share.

These sales were carried out under a pre-arranged Rule 10b5-1 trading plan adopted on June 3, 2025, indicating they were scheduled in advance. After the March 10 sale, the revocable trust held 1,604,901 shares of Fastly Class A common stock, and Bergman also holds additional shares directly and through several other trusts as reflected in the holding entries.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bergman Artur

(Last) (First) (Middle)

C/O FASTLY, INC.

475 BRANNAN STREET, SUITE 300

(Street)

SAN FRANCISCO CA 94107

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Fastly, Inc. [ FSLY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/09/2026		S(1)		6,956	D	$20.16(2)	1,902,945	I	See Foonote(3)
Class A Common Stock	03/09/2026		S(1)		25,554	D	$21.13(4)	1,877,391	I	See Foonote(3)
Class A Common Stock	03/09/2026		S(1)		7,490	D	$21.73(5)	1,869,901	I	See Foonote(3)
Class A Common Stock	03/10/2026		S(1)		265,000	D	$22.79(6)	1,604,901	I	See Foonote(3)
Class A Common Stock								2,118,710	D
Class A Common Stock								840,005	I	See Footnote(7)
Class A Common Stock								109,686	I	See Footnote(8)
Class A Common Stock								156,521	I	See Footnote(9)
Class A Common Stock								588,671	I	See Footnote(10)
Class A Common Stock								254,808	I	See Footnote(11)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 3, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.53 to $20.47, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2), (4), (5) and (6) to this Form 4.

3. The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.53 to $21.52, inclusive.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.53 to $21.83, inclusive.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.50 to $23.12, inclusive.

7. The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor.

8. The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor.

9. The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.

10. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee.

11. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 5, of which the reporting person is trustee.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	03/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

How many Fastly (FSLY) shares did Artur Bergman sell in this Form 4?

Artur Bergman reported selling a total of 305,000 shares of Fastly Class A common stock. The sales occurred in several open-market transactions on March 9–10, 2026, at different weighted average prices disclosed in the filing.

At what prices did Artur Bergman’s Fastly (FSLY) share sales occur?

The reported weighted average sale prices were $20.16, $21.13, $21.73, and $22.79 per share. Footnotes explain these averages cover multiple trades within price ranges, and detailed trade breakdowns are available upon request.

Were Artur Bergman’s Fastly (FSLY) share sales made under a Rule 10b5-1 plan?

Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan adopted on June 3, 2025. Such plans pre-schedule trades, indicating these sales were planned rather than timed discretionarily.

How many Fastly (FSLY) shares did the revocable trust hold after the reported sales?

After the March 10, 2026 transaction, the Per Artur Bergman Revocable Trust held 1,604,901 shares of Fastly Class A common stock. This figure reflects the trust’s position following the latest reported open-market sale.

Does Artur Bergman still own Fastly (FSLY) shares directly after these transactions?

Yes. The filing shows direct ownership of 2,118,710 shares of Fastly Class A common stock as of March 9, 2026, in addition to indirect holdings through several trusts identified in the footnotes.

How are the indirectly held Fastly (FSLY) shares structured for Artur Bergman?

Indirect holdings are primarily through the Per Artur Bergman Revocable Trust and several remainder and grantor retained annuity trusts. Footnotes specify his roles as settlor, trustee, beneficiary, or investment advisor for each trust.